Another of these factors is infertility. Generally, female gorillas mature at 10â12 years of age (or earlier at 7â8 years) and their male counterparts mature more slowly, rarely strong and dominant enough to reproduce before 15â20 years of age.
A herniated disk, sometimes (incorrectly) called a slipped disk, is a common cause of severe back pain and sciatica. A disk in the lumbar area becomes herniated when it ruptures or thins out, and degenerates to the point that the gel within the disk (the nucleus pulposus) pushes outward.
The sciatic nerve is responsible for providing neurological signals to much of the lower anatomy, including the knee. The nerve roots which compose the sciatic are sourced in the lumbar spinal region. Therefore, there can certainly be a spinal relationship which causes pain in the back and sciatica symptoms in the legs, including the knee.